Card-clothing foundation



26, 1930. MlDGLEY Y 1,773,783

CARD CLOTHING FOUNDATION Filed June 8, 1928 I firberz" Mfiiey @y am:

Patented Aug. 26, 1930 PATENT OFFICE HERBERT IDGLEY, 01' WORCESTER,MASSACHUSETTS CARD-CLOTHING I'OUNDATIdN This invention relates to cardclothing as used in carding engines and other textile machines. Suchcard clothing was formerly made most largely on a leather foundation. Atthe present time the use of fabric foundations is quite general, due inpart to the increasing cost of leather.

An essential characteristic of a satisfactory card clothing foundationis its ability to maintain its length substantially unchanged, and toresist stretching while in use. If the foundation stretches, the cardclothing becomes loose on the carding rolls, and it is necessary toremove the rolls from the machine and to rewind .the card clothing onthe roll. This is a troublesome and expensive operation and alsoinvolves loss of production on the machine.

Another essential characteristic of a satisfactory card clothingfoundation is its ability to firmly support and retain the card wiresinserted therein.

It is the general object of my invention to provide an improvedconstruction of card clothing'foundation so devised that it willeffectively resist longitudinal stretching, and that it will firmlysupport and retain the inserted card wires.

A further object is to provide a reinforcing layer of fabric of improvedconstruction in a card clothing foundation.

' Further features of my invention will be hereinafter described andmore particularly ble foundation.

In the drawings, I have shown the foundation as comprising a frontfacing member 10, a back facing member 11, a stiffening layerApplication and June a, 1928. Serial no. asapaa.

12, and a reinforcing layer 14. The front and back facing layers may beof any suitable woven fabric, such as is commonly used in themanufacture of fabric card clothing foundations. The stiffening layer 12is also of the usual construction, and is preferably formed of woolenthreads interwoven with stuffer warps to form a relatively thick fabric,giving body to the foundation. This stiffening layer is'preferablythoroughly impregnated as usual with some cementitious material, bywhich its stiffness is increased.

The reinforced layer 14 is of an improved and much more satisfactoryconstruction than that found in fabric card clothing foundations aspreviously manufactured. The layer 14 is formed from a special wovenfabric, having the threads 20 which extend crosswise of the fabric ofrelatively small size, and having the threads 22 which extend lengthwiseof the foundation of relatively large size, and preferably inserted inpairs in the fabric as indicated in Fig. 1.

The light threads 20 commonly form the weft threads and the heavierthreads 22 commonly form the warp threads. The warp threads 22 are notonly much heavier than the weft threads 20, but they are also formed ofhigh-grade, long-staple cotton, such as Sea-Island cotton, whichcontributes very great tensile strength to the fabric.

The card wires 30 are formed as the usual U-shaped staples and aredriven through the foundation as indicated in the drawings.

In fabric foundations as previously used, the portion corresponding tothe layer 14 has commonly been formed of a series of linen cords,extending lengthwise of the fabric and secured side-by-side merely bycementing the cords together, there ein no cross-weaving of this portionof the fabric.

My improved foundation has been found in actual test to possess veryimportant advantages over the type of foundation previously used. It isfound that my improved foundation may be used twice as long or evenlonger before stretching thereof will necessitate rewinding, and it isalso found that the cross weavin of the reinforcing layer 14 affordsadditional support to the card wires 30 over that obtained from thelongitudinal cores previously used, so that the wires do not becomeloosened as easily.

The several layers of my improved foundation may be secured together inany usual manner, as by cementing or stitching.

Having described my invention and the advantages thereof, I do not wishto be limited to the details herein disclosed, otherwise than as setforth in the claim, but what I claim is A card clothing foundationformed of a. plurality of woven fabric layers secured toether andcomprising front and back faclng fabrics, a. relatively thickintermediate woven body layer impregnated with cementitious material,and a reinforcing layer of woven fabric affording longitudinal strengthfor said foundation, said reinforcing fabric comprising relatively lightweft threads ex tending crosswise of the foundation, and relativelystrong and heavy warp threads extending lengthwise of the foundation,and said warp threads being inserted in pairs in said reinforcingfabric.

In testmony whereof I have hereunto affixed my signature.

HERBERT MIDGLEY.

